Retaining wall block



FIG. 1 is a perspective view of a first embodiment of a front portion of a retaining wall block according to my new design;

FIG. 2 is a front elevational view of the front portion depicted in FIG. 1;

FIG. 3 is a right side elevational view of the front portion depicted in FIG. 1;

FIG. 4 is a left side elevational view of the front portion depicted in FIG. 1;

FIG. 5 is a top plan view of the front portion depicted in FIG. 1; and,

FIG. 6 is a bottom plan view of the front portion depicted in FIG. 1.

The broken line showing of the back portion of the block is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a retaining wall block, as shown and described. 